package com.witframework.web.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.witframework.core.WitFrameWork;
import com.witframework.web.mvc.WebContext;

/**
 * <P>
 * application filter,set some application param
 * </P>
 * 
 * @author wuxinyang
 * 
 */
public class ApplicationFilter implements Filter {
	private WitFrameWork localThreadWitFrameWork; 
	public void doFilter(ServletRequest req, ServletResponse res,FilterChain chain) throws IOException, ServletException {
		HttpServletRequest request = (HttpServletRequest) req;
		HttpServletResponse response = (HttpServletResponse) res;
		chain.doFilter(request, response);	
		localThreadWitFrameWork.setContext(new WebContext(request,response));
	}
	public void init(FilterConfig filterConfig) throws ServletException {		
		
	}	
	public void destroy() {	
		localThreadWitFrameWork.cleanContext();
	}	
}
